gp 380 signalling

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cduda
Posts: 200
Joined: Sun May 21, 2006 9:39 am
What radios do you own?: GP300, HT1250, CDM1250

gp 380 signalling

Post by cduda »

Hello. Have a GP380 (ht1250) full keypad. dont know much about this radio. Does this radio do MDC1200 signalling? Also just to clarify---only 1 zone, cant set up more than 1 zone? If it does do MDC1200 signalling...how do you do it?

Thanks all
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Andreas
Posts: 626
Joined: Sun Sep 09, 2001 4:00 pm
What radios do you own?: radios

Re: gp 380 signalling

Post by Andreas »

No,you can only use select 5 tone and/or PL with this radio.

Andreas
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cduda
Posts: 200
Joined: Sun May 21, 2006 9:39 am
What radios do you own?: GP300, HT1250, CDM1250

Re: gp 380 signalling

Post by cduda »

what exactly is pl signalling and 5 tone signalling?
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oh2glg
Posts: 106
Joined: Tue Aug 09, 2005 7:32 am
What radios do you own?: DP4801 DM4601 SL7550 MTP850S

Re: gp 380 signalling

Post by oh2glg »

cduda wrote:what exactly is pl signalling and 5 tone signalling?
PL is known as "private line", aka. ctcss, which is a low audible tone attached to carrier signal.
Then there's this 5-tone. That's a series of pre-determined signal tones, each are 70ms to 100ms long, which depends of what the signalling type is used, like zwei or CCIR for example. Sometimes first tone is set to 700ms. When the receiver gets right signals (tones), it opens the squelch to CSQ mode for a while.

Please correct me if I'm wrong or presented some of the information in a way that has no sense.. It's late here on this hour. :)
Jussi Strömberg
Ham call: OH2JS/OH2GLG
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